header {
  line-height: 44px;
  background-color: #f8f8f8;
}
main {
  overflow: scroll;
}
main .jump {
  width: 105px;
  height: 40px;
  line-height: 40px;
  background: #fff;
  border-radius: 20px 20px 20px 20px;
  top: 72px;
  right: 15px;
}
main .slogan {
  width: 100%;
  height: 64px;
  bottom: 164px;
  left: 0;
  line-height: 64px;
  color: #fff;
  font-size: 36px;
  font-weight: bold;
}
.ad-bg {
  background: url("../../assets/imgs/advertisement-bg.jpg") center no-repeat;
  background-size: cover;
}
